نتایج جستجو برای: refractory metal compounds

تعداد نتایج: 469879  

Journal: :Nuclear Instruments and Methods in Physics Research 1984

Journal: :Philosophical transactions. Series A, Mathematical, physical, and engineering sciences 2013
Wai-Pong To Taotao Zou Raymond Wai-Yin Sun Chi-Ming Che

Transition metal compounds are well documented to have diverse applications such as in catalysis, light-emitting materials and therapeutics. In the areas of photocatalysis and photodynamic therapy, metal compounds of heavy transition metals are highly sought after because they can give rise to triplet excited states upon photoexcitation. The long lifetimes (more than 1 μs) of the triplet states...

2010
Andrew R. Barron

Metal compounds and complexes are invaluable precursors for the chemical vapor deposition (CVD) of metal and non-metal thin lms. In general, the precursor compounds are chosen on the basis of their relative volatility and their ability to decompose to the desired material under a suitable temperature regime. Unfortunately, many readily obtainable (commercially available) compounds are not of su...

Journal: : 2023

The properties, application, and methods for producing chromium zirconium carbides are considered. These oxygen-free refractory metal-like compounds. As a result, they characterized by high values of thermal electrical conductivity. Their hardness is relatively high. Chromium exhibit significant chemical resistance in aggressive environments. For these reasons, have found application modern tec...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید چمران اهواز - دانشکده علوم 1370

1- in a search directed to the reaction of compound)23(the cycloaddition reaction of 1,3- diphenylisobenzofurane)14(with p-benzoquinone)19(,followed by addition of cyclopentadiene was carried out.the specific spacial stracture of its ir,nmr,mass spectra. 2- in another attempt the kinetic stability and behavior of compounds)20(and)23(was studied.the main subject of this study was the highly reve...

Journal: :The Science of the total environment 1991
J D Hoeschele J E Turner M W England

Selected physical and inorganic concepts and factors which might be important in assessing and/or understanding the fate and disposition of metal compounds in a biological environment are reviewed. The stereochemistry (geometry), thermodynamic stability, redox properties, and intrinsic reactivity/lability are properties of metal compounds which can have a major influence on metal-target binding...

Journal: :Molecules 2010
Kiyotomi Kaneda Takato Mitsudome Tomoo Mizugaki Koichiro Jitsukawa

In this review, we describe the development by our research group of highly functionalized heterogeneous Olympic medal metal (gold, silver, and copper) nanoparticle catalysts using hydrotalcite as a support, aimed towards Green and Sustainable Chemistry. Olympic medal metal nanoparticles can cooperate with the basic sites on the hydrotalcite surface, providing unique and high performance cataly...

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